In a 3d Model do a cross section. Then open the components panel, since you want to look for a part - cross section is gone. You can either have a cross section of the components panel open, which makes it hard to look for parts which are inside the 3d model.
Regards,
GK
This was partly fixed in SP3. Make a cross section and open components list -> cross section is gone. If components list is open and one makes a cross section everything is okay. I'll write a new forum entry for that and close this thread.